<template>
    <div>
        <el-card>
             <h3>欢迎页</h3>
             <img src="../assets/yjx.jpg" alt="">
        </el-card>
      
    </div>
</template>
<style scoped>
   img{
       opacity: 0.7;
       height: 500px;
       width: 900px;
     
   }
</style>